One of Voldemort's most devoted followers. She's a tall and imposing witch with long black hair, and she's one of the most evil Death Eaters: she's responsible for Sirius's death, as well as torturing Neville's parents to the point of insanity. Voldemort trusts her and so he asks her to keep one of his Horcruxes in her vault at Gringotts, although he never shares with her that Hufflepuff's cup is a Horcrux. However, Bellatrix finds herself in a difficult spot with Voldemort because of her family connections: she's Tonks's aunt and, in addition to having a Muggle-born brother-in-law in Ted Tonks, Tonks's marriage to the werewolf Lupin means that Voldemort teases her mercilessly. She's obsessed with blood purity and does whatever she can to attempt to kill Tonks and Lupin. Bellatrix is cruel and has no problem torturing anyone who gets in her way. However, Harry is forced to understand that for all of Bellatrix's evil, she was kind to the house-elf Kreacher and was able to use his resulting loyalty to her advantage. Mrs. Weasley kills Bellatrix after Bellatrix attempts to kill Ginny, and she's Voldemort's last important follower to die.